标准编号：ISO 13947:2007
中文名称：金属粉末 采用粉末锻造试样测定金属粉末中非金属夹杂物的试验方法
英文名称：Metallic powders — Test method for the determination of non-metallic inclusions in metal powders using a powder-forged specimen
发布日期：2007-02
标准范围
This International Standard specifies a metallographic method for determining the non-metallic inclusion level inmetal powders using a powder-forged specimen. The test method covers repress powder-forged testspecimens in which there has been minimal lateral flow (< 1 %). The core region of the powder-forged testspecimen contains no porosity detectable at 100× magnification.This test method can also be used to determine the non-metallic inclusion content of powder-forged steel parts.However, in parts where there has been a significant amount of material flow, the near-neighbour separationdistance needs to be changed, or the inclusion sizes agreed between the parties need to be adjusted.This test method is not suitable for determining the non-metallic inclusion level of parts that have been forgedsuch that the core region contains porosity. At the magnification used for this test method, residual porosity ishard to distinguish from inclusions. Too much residual porosity makes a meaningful assessment of the inclusionpopulation impossible.This test method may be applied to materials that contain manganese sulfide (admixed or prealloyed), providedthe near-neighbour separation distance is changed from 30 μm to 15 μm.
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